A non-derogatory description of a homosexual- typically male.
Can be used in a friendly, joking way, usually in conversation with an out-of-closet gay who is already your friend. It can almost be considered a term of platonic endearment for your gay friend.
(can be used as a noun or adjective)

Andrew: Oh my god, Joe is so cute today!
Laura: You're so KALM, man. You are so obsessed with that guy.
Andrew: I know! :D
Laura: Dude, I love you. hahaha
Shelby: You guys are so disney.